摘要
隧道软弱围岩强度低,自稳能力差,支护参数设计不合理会产生较大的变形,影响隧道的稳定性。依托207国道左权至黎城界公路工程桥上隧道软弱围岩变形控制实践,在支护参数优化后对隧道支护结构开展监控量测,分析拱顶下沉、周边位移和围岩压力的变形情况,得出优化后隧道围岩稳定性明显提高,达到了预期的加固效果。
The low strength, bad stability, and unreasonable support parameter of the tunnel soft rock will cause large deformation which can influence the stability of the tunnel. Based on the practice of deformation control of tunnel soft rock of the engineering bridge in Zuoquan-Licheng Section of G207, after the optimization of the support parameter, the tunnel support structure was monitored and measured to analyze the deformation of the crown settlement, surrounding displacement and surrounding rock pressure. It is concluded that the stability of the optimal tunnel surrounding rock was obviously improved and achieved the expected reinforcement effect.
作者
郜安安
GAO An-an(The First Branch of The Sixth Engineering Co.,Ltd.of Shanxi Road&Bridge Construction Group,Jinzhong,Shanxi 030600,China)
出处
《山西交通科技》
2020年第5期79-81,共3页
Shanxi Science & Technology of Transportation
关键词
高速公路
隧道
软弱围岩
拱顶下沉
周边位移
围岩压力
highway
tunnel
soft rock
crown settlement
surrounding displacement
surrounding rock pressure
